Adjustable counterbalance radius-crane.



W. VAN WIE.v ADJUSTABLE GOUNTERBALANGB RADIUS CRANE. APPLICATION FILED APR.25,1908- 911,093, Patented Fem, 1909.

'INE Namus PETER: col, WAsll'INafall. D. sA

] uNrrnD {srnrns lWALTER VAN WIE, OF

OAKLAND, CALIFORNIA.

AD JUSTABLE COUNTERB ALANCE RADIUS-CRANE.

Specication of Letters Patent.

Patented Feb. 2, 1909.

Application filed April 25, 1908. Serial No. 429,220.

To all 'whom 'it may concern:

Be it known that I, WALTER VAN WIE, a citizen of the United States, residing at Oakland, in the county of Alameda and State of California, have invented a new and useful Improvement in Adjustable,Oounterbalance Radius-Cranes, of which kthe followingis a specification.

This invention relates to an adjustable horizontal swinging radius counterbalanced crane, which is an improvement upon a radius crane which is subject matter of a separate application Serial Number 429,699.

The invention consists in the novel features of construction hereinafter described', pointed out in the claim and shown in the accompanying drawings, in whichy Figure 1 is a side elevation illustrating the use of the invention. Eig.V 2 is a planV view of the device, certain supporting bolts being shown in section.

In these drawings 1 re resents a curved track, and 2 a `horizonta swinging beam, said be am swinging in a horizontal plane and being supported at one end by a swiveled bracket 3. The beam 2 carries a shaft 4 having a wheel 5 which travels upon the track 1 and a pulley 6 over which runs an operating chain 6a. These arts are sub'- stantially similar toparts s own and described in the` application above referred to. The improvement designed to be covered by this ap lication resides in the following additional) features:ln the bracket 3 is pivotally mounted a depending rod 7 to the lower end of which is pivotally mounted a weight beam 8. To one end of this beam is secured a hoisting cable 9 which cable runs over suitable pulleys 10 carried by the beam 2 and which is to be connected to the article to be lifted. A chain 11 is carried by the beam 2in position to be ,engaged by an ad- 'ustable hook 12 carried `by the free end of the weight beam 8, and which hook is adjusted by means of a bench nut 13.y A traveling carriage 14 is mounted upon the'weight beam 8 and carries a counter balance weight 15, and a threaded rod 16 carried by and beneath the beam 8 Works through a suitable nut 17 carried by the carriage 14 and serves to move said carriage along the beam 8.

The operation of the device is brieliy as follows The cable 9 is secured to the work to be lifted and by turning the nut 13 the hook 12 maybe disengaged from a link of the chain 11 thus throwing the weight of the weight beam and parts carried thereby upon the cable 9. By means of the wheel 16a the of the beam 8V thus overbalancing the weight of the article to be lifted and throwing the parts into the position shown in dotted lines in Fig. 1. By means of the chain 7, pulley 6, shaft 4 and wheel 5, the beam 2 and the article to be supported'by the cable 9 may be swung in a circle until the work is above the deposited. The weight 15 is then run back allowing Vthe article lifted to radually descend to the floor and the hoo 12 is again engaged with a link of the chain 11 and the cable 9 .disengaged from the casting or other article to which it may have been attached.

Other convenient methods of handlin heavy articles by means of this device be obvious to those familiar with hoisting devices.

Having thus fully described my invention, what l claim asnew and desire to secure by Letters Patent, is

A device of the kind described comprising a beam travelinghorizontally about a pivot point, a depending rod pivotally connected in alinement with the pivotal point of the beam, a second beam pivotally connected at adjustable hook carried by the free end of the second mentioned beam in position to engage said chain. f

WALTER VAN WIE. l

Witnesses:

A. C. HAMMELL, WLM. BALDWIN.

`iioor or other surface upon which it is to be ing from the iirst mentioned beam and an.

The rod 16 is rotated by means of a hand carriage 14 may be run towards the free end f one end to the depending rod and swinging 

